Ed Brown Products Fixed Rear Night Sight 1911 2 dot Black. The Ed Brown fixed sight has slightly rounded edges so it won't snag on clothes or holsters and a rebated blade for glare free shooting. Requires machining for correct installation. The night sight has tritium inserts with high visibility white outlines. Notch width is approximately 0.115in. Dovetail is 65 degrees x 0.495in. Sight height is 0.325in. Specifications for Ed Brown Products 1911 Fixed Rear Night Sight: Manufacturer: Ed Brown Products Gun Model: 1911 Color: Black Rear Sight Color: White Outline Gun Type: Pistol Rear Blade Height: 0.325 in Illumination Type: Tritium Illumination Color: White Mount Type: Dovetail Package Contents: Ed Brown Products 1911 Fixed Rear Night Sight Ed Brown Products 956-LMC-03: Fixed Rear Night Sight 1911 2 dot Black